Fast delivery of heralded atom-photon quantum correlation over 12 km fiber through multiplexing enhancement.

ABSTRACT: Distributing quantum entanglement between distant parties is a significant but difficult task in quantum information science, as it can enable numerous applications but suffers from exponential decay in the quantum channel. Quantum repeaters are one of the most promising approaches towards this goal. In a quantum repeater protocol, it is essential that the entanglement generation speed within each elementary link is faster than the memory decoherence rate, and this stringent requirement has not been implemented over a fiber of metropolitan scale so far. As a step towards this challenging goal, in this work we experimentally realize multiplexing-enhanced generation of heralded atom-photon quantum correlation over a 12 km fiber. We successively generate 280 pairs of atom-photon quantum corre

SUBMITTER: Zhang S 

PROVIDER: S-EPMC11603145 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature